Born in New Bedford, the son of Michelle Bergeron of New Bedford and the late James R. Downey, he lived most of his life in Fairhaven. Justin drove trucks for various area construction and trucking companies. He was an avid fan of fantasy football which he enjoyed playing with his friends.

He is survived by his mother Michelle Bergeron and her soul mate Glenn Owens, Sr. and his family, Glenn, Jr., Taiice and Ebony; a son, Justin R. "JJ" Downey, Jr.; his fiancee, Lisa L. Vinjerud and her children, Odin and Freya; grandparents, Dianne Clark and her husband Richard of Fairhaven; great grandmother, Dorothy Best of Fairhaven; aunts and uncle, Steve, Sharon, Joanne, Diane and Carol; a half sister, Elizabeth and her husband of Gainsville, FL; and several cousins, nieces and nephews.

Justin was also predeceased by his grandparents, Edward and Jacqueline Downey; and great grandfather, George "Dah" Best.

Private arrangements were by the Fairhaven Funeral Home, 117 Main Street, Fairhaven.